The Insurance Institute of Highway Safety has released its latest booster seat test results which show seat makers are more than ever designing better products.

The agency looked at 17 booster seats newly introduced for 2012. All but two of those have been added to the list of Best Bet booster seats which now totals 47.

"Booster manufacturers have risen to the Institute's challenge to improve seat design, giving parents more choices than ever when shopping for a booster that will provide a good, safe fit for their children," says Anne McCartt, Institute senior vice president for research, in a press release.

The Institute does not crash test booster seats, but instead checks to make sure a car's seat belts properly fit the seat and the child. A correct fit means the lap belt lies flat across the child's thighs and the shoulder belt crosses snugly over the middle of the shoulder.

The two low-ranked boosters for 2012 are the Safety 1st All-inOne and Safety 1st Alpha Omega Elite. Both are older 3-in-1 designs made my Dorel Juvenile Group Inc. The two seats can convert between a rear-facing infant seat, front facing child seat, and booster for larger children. While the IIHS said the two seats perform acceptably for the first two stages, they were not suitable as boosters

Four Evenflo boosters that didn't make last year's cut have been discontinued.

See the IIHS video below, along with a press release and the rundown of all the Best Bet booster seats.

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Boosters improve: Most new seats provide good belt fit;
Two Safety 1st models are not recommended as boosters
ARLINGTON, Va. - Fifteen of 17 booster seats introduced in 2012 earn the top rating of BEST BET from the Insurance Institute for Highway Safety, evidence that more than ever, manufacturers are designing seats to provide good safety belt fit for booster-age children.

The improvements mean that BEST BET boosters now outnumber seats in any of the three other categories for the first time since the Institute released its inaugural booster ratings in 2008. Boosters are supposed to improve how adult lap and shoulder belts fit children so the belts can properly restrain them in crashes. BEST BET boosters correctly position belts on a typical 4-to-8-year-old child in almost any car, minivan or SUV.

"Booster manufacturers have risen to the Institute's challenge to improve seat design, giving parents more choices than ever when shopping for a booster that will provide a good, safe fit for their children," says Anne McCartt, Institute senior vice president for research.

In all, there are 47 BEST BET boosters for 2012. The new rankings include the latest models, plus older top-rated designs still on the market. Five seats are a GOOD BET, meaning they provide acceptable belt fit in most vehicles. The 37 boosters in the Check Fit category may provide good fit for some children in some vehicles, but not as many as a BEST BET or GOOD BET. As with any booster, parents should make sure the lap belt lies flat across their child's upper thighs and the shoulder belt crosses snugly over the middle of the shoulder. If not, try a different seat.

Two boosters are not recommended because they don't provide proper belt fit, and consumers are advised to avoid them. The Safety 1st All-in-One and Safety 1st Alpha Omega Elite, both made by Dorel Juvenile Group Inc., are older designs first evaluated in 2009. These models are 3-in-1s that can be used as rear-facing and forward-facing child restraints with a built-in harness. They can be converted to boosters by removing the harness and using lap and shoulder belts to restrain a child. Although these seats should work well as child restraints, they aren't the best option for boosters because they leave the lap belt too high on the abdomen and the shoulder belt too far out on the shoulder. Four other boosters on last year's not recommended list have been discontinued by Evenflo Company Inc.

"Dorel should redesign the All-in-One and Alpha Omega Elite to improve booster function," McCartt says. "Parents who own these seats should use them with the built-in harness as long as possible, up to Dorel's recommended height and weight limits."

There are better options for consumers who prefer the versatility of a 3-in-1. Four BEST BETs are 3-in-1s. These include the Evenflo Symphony 65 e3 and three models from Diono LLC - the RadianR100, RadianR120 and RadianRXT. Another choice is the Evenflo Symphony 65, which is a GOOD BET.

Why fit matters
Federal regulations don't address how a booster should position safety belts. Manufacturers crash test boosters, but these simulations don't tell parents how boosters will fit their children in their vehicles. The Institute launched its ratings program after research showed most boosters weren't doing a good job of fitting safety belts correctly and consistently in a variety of vehicles.

Using a belt-positioning booster is important for kids who have outgrown harness-equipped child restraints and aren't big enough for adult belts. Children ages 4-8 in boosters are 45 percent less likely to sustain injuries in crashes than kids restrained by belts alone. Children who are using improperly fitted belts are at risk of a host of crash injuries known as "seat belt syndrome." These include spine injuries and internal organ injuries. Boosters help by elevating a child into position and guiding the belts for better protection.

No crash tests are conducted as part of the evaluations. The Institute's ratings focus on belt fit. They don't assess how boosters might perform in a crash because safety belts do the main job of protecting children, not boosters. Some manufacturers say their boosters provide enhanced protection in a side crash, but the Institute hasn't evaluated these claims.

To assess belt fit, Institute engineers use a test dummy representing an average-size 6-year-old child. They measure how lap and shoulder belts fit the dummy in each booster under four conditions representing the range of belt configurations in real-world vehicles.

The Institute evaluates models new to the market each year. Ratings of boosters with designs that carry over into the next model year remain on the list until the seats are discontinued. In all, the latest ratings cover 91 boosters.

Dual-use boosters
Boosters come in two main styles: highback and backless. Highbacks have guides to route lap and shoulder belts and can offer some head support. Backless models have lap belt guides but may need a plastic clip to properly position shoulder belts in many vehicles. Some highbacks, called dual-use, can be converted to backless seats. These get two ratings, one for each mode, because belt fit can differ by mode. Consumers should pay attention to each rating and consider how they will use the seats in their vehicles.

Six of the 24 dual-use boosters included in the 2012 ratings earn BEST BET or GOOD BET in both modes. These include two from Harmony Juvenile Products, the Dreamtime and V6 Highback Booster; one from Combi USA Inc., the Kobuk Air-Thru; and three by Graco Children's Products Inc., the TurboBooster, TurboBooster Elite and TurboBooster Safety Surround.

"Parents often tell us they want a dual-use booster that's a BEST BET no matter how they use it," McCartt says. "Having more to pick from really simplifies things."

This year's top-rated boosters come in a variety of styles and a range of price points. BEST BETs retail for as little as $19 to as much as $300. Among the new BEST BET models, the backless Graco TurboBooster COLORZ sells for about $26, the highback TurboBooster retails for about $50 and the backless Harmony Carpooler starts at about $35.

McCartt points out that manufacturers sometimes use similar names for different seats, or even the same names for new models, so consumers should consult the Institute's website for model numbers, manufacture dates and photographs when they shop for a new booster seat.

She advises parents not to be in a hurry to switch to a booster. Kids should ride in harness-equipped child restraints in rear seats as long as possible, up to the height and weight limits of the seats. Many typically accommodate children up to about 65 pounds - and some go higher. When children outgrow child restraints, they should use boosters until adult belts fit properly, usually when a child reaches 4 feet 9 inches and 80 pounds.

2012 IIHS booster evaluation results

(New models for 2012 are in bold)

  • Britax Frontier 85
  • Britax Frontier 85 SICT
  • Britax Parkway SGL (highback mode)
  • BubbleBum
  • Chicco KeyFit Strada (highback mode)
  • Clek Oobr (highback mode)
  • Cosco Pronto (highback mode)
  • Diono Monterey (highback mode)
  • Diono RadianR100
  • Diono RadianR120
  • Diono RadianRXT
  • Eddie Bauer Auto Booster (highback mode)
  • Evenflo Big Kid Amp
  • Evenflo Big Kid Amp High Back (backless mode)
  • Evenflo Big Kid Sport (backless mode)
  • Evenflo Maestro
  • Evenflo Secure Kid LX/DLX
  • Evenflo Symphony 65 e3
  • Ferrari Dreamway SP (highback mode)
  • Graco Argos 70 (highback mode)
  • Graco Backless TurboBooster
  • Graco Nautilus (highback mode)
  • Graco TurboBooster (backless mode)
  • Graco TurboBooster (highback mode)
  • Graco TurboBooster COLORZ
  • Graco TurboBooster Elite (backless mode)
  • Graco TurboBooster Elite (highback mode)
  • Graco TurboBooster Safety Surround (backless mode)
  • Graco TurboBooster Safety Surround (highback mode)
  • Harmony Carpooler
  • Harmony Cruz Youth Booster
  • Harmony Dreamtime Booster (backless mode)
  • Harmony Dreamtime Booster (highback mode)
  • Harmony Olympian
  • Harmony V6 Highback Booster (backless mode)
  • Harmony V6 Highback Booster (highback mode)
  • Harmony Youth Booster Seat
  • Kiddy Cruiserfix Pro
  • Kiddy World Plus
  • Kids Embrace Dale Earnhardt Jr.
  • Maxi-Cosi Rodi XR (highback mode)
  • Recaro ProBOOSTER
  • Recaro ProSPORT
  • Recaro Vivo
  • Safety 1st Boost Air Protect (highback mode)
  • Safety 1st S1 Rumi Air/Essential Air
  • The First Years Pathway B570

  • Britax Parkway SG (highback mode)
  • Combi Kobuk Air-Thru (backless mode)
  • Combi Kobuk Air-Thru(highback mode)
  • Evenflo Symphony 65
  • Maxi-Cosi Rodi (highback mode)

Not recommended
  • Safety 1st All-in-One
  • Safety 1st Alpha Omega Elite

Check fit
Some boosters are designated "check fit." They may provide adequate belt fit for some kids in some vehicles. Go here for the full list of model numbers and photos for these seats.

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